package com.larry.mr.wordcount;

import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Reducer;

import java.io.IOException;
import java.util.Iterator;

/**
 * @ProjectName map-reduce
 * @Author larry
 * @Date 16:04 2022/3/28
 * @Description TODO
 **/
public class WordcountReducer extends Reducer<Text, IntWritable,Text,IntWritable> {

    private IntWritable v = new IntWritable();

    @Override
    protected void reduce(Text key, Iterable<IntWritable> values, Context context) throws IOException, InterruptedException {

        int sum = 0;

        for (IntWritable value : values) {
            sum += value.get();
        }
        v.set(sum);
        context.write(key,v);

    }
}
